Web/API/Element/getAttributeNames

The getAttributeNames() method of the Element interface returns the attribute names of the element as an Array of strings. If the element has no attributes it returns an empty array.

Using getAttributeNames() along with getAttribute(), is a memory-efficient and performant alternative to accessing Element.attributes.

Syntax

let attributeNames = element.getAttributeNames();

Example

// Iterate over element's attributes
for (let name of element.getAttributeNames()) {
  let value = element.getAttribute(name);
  console.log(name, value);
}

Polyfill

if (Element.prototype.getAttributeNames == undefined) {
  Element.prototype.getAttributeNames = function () {
    var attributes = this.attributes;
    var length = attributes.length;
    var result = new Array(length);
    for (var i = 0; i < length; i++) {
      result[i] = attributes[i].name;
    }
    return result;
  };
}

Specifications

Specification	Status	Comment
DOMThe definition of 'Element.getAttributeNames' in that specification.	Living Standard	Initial definition

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
getAttributeNames	Chrome Full support 61	Edge Full support 18	Firefox Full support 45	IE No support No	Opera Full support 48	Safari Full support 10.1	WebView Android Full support 61	Chrome Android Full support 61	Firefox Android Full support 45	Opera Android Full support 45	Safari iOS Full support 10.3	Samsung Internet Android Full support 8.0

Legend

Full support  

Full support

No support  

No support

Element.getAttributeNames() by Mozilla Contributors is licensed under CC-BY-SA 2.5.